Question

Using the data, given below, construct a frequency distribution table:

9, 17, 12, 20, 9, 18, 25, 17, 19, 9, 12, 9, 12, 18, 17, 19, 20, 25, 9 and 12.

Now answer the following:

(i) How many numbers are less than 19?

(ii) How many numbers are more than 20?

(iii) Which of the numbers, given above, is occurring most frequently?

Answer 1

The required frequency table will be as shown below:

Marks	Tally marks	Frequency
9	||||	5
12	||||	4
17	|||	3
18	||	2
19	||	2
20	||	2
25	||	2
Total		20

(i) There are 14 numbers are less than 19.
(ii) There are 2 numbers more than 20.
(iii) 9 is occurring most frequently i.e. 5 times.